Water-trap air-eliminating closet box



March 24, 1931. J. R. SYMITH WATER TRAP AIR ELIMINATING CLOSET BOX Filed Feb. 25, 1930 ATTORNE s.

Patented Mar. 24, 1931 UNITED STATES JOHN B. SMITH, or nos ANGELES, CALIFORNIA WATER-TRAP nra-nzr nnerrne onosar BOX Application filed February 25,1930. Serial 'No. 431,142. I

This invention relates to water closets and more especially to closets having bowls provided with siphon jet passages.

My present invention is an advance of the art as shown in my prior patents in this class, and over my several pending applications as follows; S. N. 19,033, filedJ an. 7, 1930, and S. N. 417,095, filed Dec. 28, 1929.

' It is my aim to accelerate the discharge of bowl contents with the least possible increment of air discharge into the bowl from the supply system of flushing water, and, to the greatest extent possible, avoid displacement will be accomplished it there is no rise of water in the bowl as a result of flushing and if there is no air discharged from the system to the bowl.

Therefore, the invention consists of means to effect discharge of the basin without rise of water, at least until after eduction by siphon has occurred, and provision of means and such a system of connection as will reduce air capacity of the line of flow to the jet intake of the bowl to the least possible, practicable minimum.

The principle involved is to provide a flow line as free of air capacity as possible thus eliminating air discharge to the bowl and to provide a nozzle or port whose discharge'is coaxial with the intake end of the jet passage so that the kinetic energy and velocity factors in the flush flow will be combined to act as a ram on the standing water in the passage and 2 so most forcibly impinge thls toward the means, and the manner of operation will be made manifest in the description of the herewith illustrative embodiment; it being understood that modifications, variations and adaptations may be resorted to withinthe scope, principle and spirit of the invention as it is more directly claimed hereinafter.

Figure 1' is a vertical, sectional view of one type of installation and bowl combination.-

Fignre 2' is an' outer end view of one form of trap and space eliminator, and p V Figure 3 is a side elevation and partial sectional view thereof.

Figure ais an inner end view of the eliminator.

Figure?) 1s a plan of a close-hitched, flushvalve assembly, and Y of air outward from the top of the bowl. This Figure 6.is a side'elevation otthe hitch connection.

A closet bowl 2' is shown as provided with a jet passage 3 discharging at l toward leg of a siphon chamber, inthe usual well known manner. a i

Ordinarily the intake end 7 of the passage 8 open-s'into a'box 8 which has. openings to the flush rim 9 for washing'down the. bowl. By

any present invention this wash down is delayed until after the basin contents have been siphoned oii.

Any suitable flushing water supplymeans maybe combinedwith the bowl. Fig.1 shows a flush pipe 11 appropriately connected to the bowl box 8. In order to reduce the air volume as much as possible in advance of the mouth 7 7 of the jet passage a water trap is interposed "in the flow line to the passage; the water X held in the trap displacing an equal volume of air which otherwise would" be projected with the flush water-to the bowl ducts 3-9 and so bedispelled upward with contamina'tedair in theibowl. Air carried through the passage 3 will bubble up into the bowl basin water and pass thence from the bowl and my object is to reduce all air possible as. by a trap in'the line to the'passage 3 and in advance of its mouth 7 or by a close connection, or hitch, ofa flush valve 20, Fig. 6.

v The trap includes, in oneform, a closed shell 17 discharge from which is through a backup pipe 18 Whose intake mouth deter mines the level of trapped water inthe trap space; the discharge end of this trap 18 being disposed co-axiallywith the mouth 7 of the passageB so that the stream of flush water SEO from the trap is directed straight into said mouth and impinges with high velocity and energy on the standing water in the foot of the passage with the result that this is driven rapidly to the siphon leg and the eduction of basin contents is started without rise of liquid inlthe-basin, such rise being obj ectionable becauseof upward displacement of air divergent outlets "18" are shown in dotted lines, as rfor certain types of bowls.

It will be seen that water will back up in the box Sand flow to the flush rim 9, follow ing the initiated bowl siphoning action; the outlet 19 oftthe trap'being made larger than the outlet of passage 3 so as to provide rim flush supply.

For ready adaptation the shell 17 is shown as having a threaded nipple 17 of conventional form witha gasket assembly 17? to seal it in the juncture box 8; the shell providing the trap and resembling a plugsubstantially filling the box chamber. I

'In Figs. 5 :and 6 a'flush valve 20 is shown as close-connected or hitched at 21 to .the box 8 and thereby eliminates air-space incident to a long connection, as wholly the practice up to the time of this invention.

In use of such close-hitch valve 120 the operating lever 20 is extended around to one side of the .bowl for ready access without necessity of the user having-t0 reach to the rear of the bowl.

hat is claimed is:

1. A'siphonjet closet having, in combine tion, a .bowl, ifiush Watersupply means including a control-valve,.and a water trap between said valve and the jet passage of the bowl whereby to minimize the inert air capacity bet-ween valve and jet passage; said trap provided with a discharge port which is substantially coaxial with the intake end. of the jet passage; whereby'to issue the flush water directly into the said end.

2. A siphon'j'et closet having in coinbina- 4. An air eliminator, for jet passage clos ets, consisting of a trap interposed between a flush water supply means and the intake of the jet passage, and comprising a displacement chamber insertible bodily into the closet body and having coupling nipple at its outer end.

5. An air eliminator, for jet passage water closets, consisting of a trap interposed in the supply water line in advance of the intake mouth of the passage and provided with a discharge port which is co-axial with the mouth of the passage.

.6. A siphon jet-closet bowl having a flush rim around its top and a jet passage which communicateswith the nimchamber, a spud connection, :and a diverting dam wall intercepting all of-the watercoming from-the spud and directing all of the water .into the jet passage and being-disposed at the top of-the passage and wholly above the basin water- :level of the 'bowl to eliminate any obstruction thereof.

JOHN B. SMITH. 

